Secure space-time block coding via artificial noise alignment

@article{Fakoorian2011SecureSB,
  title={Secure space-time block coding via artificial noise alignment},
  author={S. Ali A. Fakoorian and Hamid Jafarkhani and A. Lee Swindlehurst},
  journal={2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR)},
  year={2011},
  pages={651-655}
}
(STBC) for MIMO Gaussian wiretap channels. It is assumed that the transmitter has the receiver's channel state information, but not that of the eavesdropper. We first propose a full-rate STBC that provides separate decoding complexity (rather than pairwise) at the intended receiver, while requiring an exhaustive search for Maximum Likelihood (ML) decoding at the eavesdropper. Next we make the code more secure by including artificial noise symbols which (for the asymptotically high SNR regime… CONTINUE READING